Mercedes-Benz
Airmatic body acceleration sensor fault; car may rise to its highest level.
C1123 fault code: what it means
C1123: Airmatic body acceleration sensor fault; car may rise to its highest level.
Usual causes, most likely first
- failed acceleration sensor
- wiring fault
C1123 by make
What the repair usually costs
- Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510
Not sure what C1123 means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.